文档介绍：西南交通大学硕士研究生学位论文第1页摘要楼梯结构作为建筑的竖向通道,其重要性不言而喻。然而在历次的地震中, 研究人员都发现,在很多主体结构完好的情况下,楼梯结构遭到了很大的破坏。本身担当逃生角色的楼梯,却并没有在自然灾害的面前发挥其应有的功能。同时,由于楼梯的存在使得结构在楼梯方向的刚度得到加强,使得在地震作用下,与楼梯相连接的主要受力构件的内力得到加强,最后发生破坏,这对建筑结构的影响同样很大。本文就是从这两个方面入手,从有限元理论出发,结合抗震与结构体系的基本知识,建立了一系列的框架和框剪结构模型。这些模型中,有的包含了楼梯,有的不包含楼梯,有的对楼梯的位置做了变化。最后利用国际上通用的结构分析软件SAP2000对这些模型在多遇和罕遇地震下进行了计算分析。本文的主要工作包括: (1)对比了楼梯结构(板式、梁式)在考虑地震作用与不考虑地震作用下,楼梯结构中各个构件的内力变化; (2)对比了框架与框剪结构在考虑与不考虑楼梯时候,整体结构在地震作用下的动力响应及受力特性,对楼梯位置变化对整体结构的影响做了分析, 同时在罕遇地震下,对考虑与不考虑楼梯的框架结构做了Pushover分析,评价了其抗震性能; (3)对目前的楼梯结构设计方法和考虑楼梯的整体结构的设计方法给出了建议。关键词:楼梯结构地震作用有限元框架框剪Pushover抗震性能西南交通大学硕士研究生学位论文第1I页 Abstract Staircase structure, astheverticalchannel ofthestructure,its importance iS ofself- inprevious researchers discovered that inthesituationsthatmany main body structures have been performing well,the staircase structure has been encountered devastative staircases which were supposed tOplay theroleofhelppeople escape,did not perform their proper functions inface ofnaturaldisasters. Atthesame totheexistence ofthestaircase structure,the main structure’S stiffness inthe directionofthestaircaseiSreinforced,which,under the alsostrengthen theinternal force ponents that connected thestaircases,and finally causes thebuilding structure, the influence iSalSOvery great. from thesetwoaspects and according toFiniteElement Theory together withthebasicknowledge ofSeismic andStructuralSystem,is aimed toestablish aseriesofframeand wallstructure these models,some include thestaircases,some donot,and some change theposition of through theapplication oftheinternationally general structure analysis software models mon and rareearthquakes can be calculatedandanalyzed. The main tasksofthisPaDer include: (1)pare,under orfreefrom earthquakes,the changes oftheinternal forcesofeachstaircasestructure’Scomponent(beam,plate). (2) thec